West Mifflin, Pennsylvania

West Mifflin, Pennsylvania
Borough
Kennywood
Location in Allegheny County and the U.S. state of Pennsylvania.
Coordinates: 40°22′5″N 79°53′51″W / 40.36806°N 79.89750°W / 40.36806; -79.89750
Country	United States
State	Pennsylvania
County	Allegheny
Incorporated	1788 (Mifflin Township)
	Dec. 11, 1942[1] (Borough)
Government
• Mayor	Chris Kelly
• Council	John Inglis Karen Santoro Michael Moses Robert Kostelnik Joyce Kushner Steve Marone Scott Stephenson
• Borough Manager	Brian Kamauf
Area [2]
• Total	14.50 sq mi (37.56 km2)
• Land	14.21 sq mi (36.79 km2)
• Water	0.29 sq mi (0.76 km2)  1.8%
Population  (2020)
• Total	19,589
• Estimate  (2019)[3]	19,699
• Density	1,386.67/sq mi (535.38/km2)
Time zone	UTC-5 (EST)
• Summer (DST)	UTC-4 (EDT)
ZIP code	15122[4]
Area code	878
FIPS code	42-83512
Website	www.westmifflinborough.com

West Mifflin is a borough in Allegheny County, Pennsylvania, United States, located southeast of downtown Pittsburgh. The population was 19,589 at the 2020 census.^[5] It is named after Thomas Mifflin, 1st Governor of Pennsylvania, signer of the United States Constitution, and 1st Quartermaster General of the United States Army.^[6]

Although the borough is heavily residential, it is home to one of America's oldest traditional amusement parks, Kennywood Park. Other employers include advanced naval nuclear propulsion technology research and development facility, Bettis Atomic Power Laboratory; monorail manufacturer Bombardier; US Steel's Mon Valley Works–Irvin Plant; Community College of Allegheny County's South Campus; and the Allegheny County Airport.^{[citation needed]}